TY - JOUR
T1 - Three-photon enhanced optical nonlinearity of poly(3-butylthiophene)
AU - Byrne, H. J.
AU - Blau, W.
AU - Jen, Kwan-Yue
PY - 1989/10/13
Y1 - 1989/10/13
N2 - Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated. © 1989.
AB - Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated. © 1989.
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U2 - 10.1016/0379-6779(89)90845-X
DO - 10.1016/0379-6779(89)90845-X
M3 - RGC 21 - Publication in refereed journal
SN - 0379-6779
VL - 32
SP - 229
EP - 235
JO - Synthetic Metals
JF - Synthetic Metals
IS - 2
ER -